One of the many forums:

The xxx:
Tell the plz, you can somehow in the wheel prevent the user from pressing a certain combination of keys. The user is quite cut in rights, the prohibited combination is used only in one program, the source of which is not. The problem cannot be solved administratively.

YYYY :
If the keys are at different ends of the keyboard, then you can try to attach one hand with handcuffs to the battery.

and ZZZ:
Can you remove the "forbidden" buttons from the keyboard?